Concentrating-table.



E. @L W. F. DEISTER.

GONGENTRATING TABLE. APPLICATION FILED JUN 14, 1912.

4Pmented'oct. 1, 191,2".

w lll@ Y jNvENTons Mu/v WITN ESSESI Aam th' i we, 1mm ,Daisies and muny imrs'rnn AND wILmfAmzrr. Dineren, oFroRrwAYNE, inmniv indiana, Veniitizens.of the` United y Statesfhave Y; invented Idiscovered certain ,new 1and useof` improvements Eth'e following is a SPeGfieatn-,f ,t f Materialsas they come f romuthe stamps are graddd before concentrationLso vthat they may be'jvdi's'tribdted to :tablesv 'suitable forV treating the various grades, experience hat# in treatingffsand The fifnven I,partofthisspecication, Figure 1 is atop Plnv'w Of -blmbdying the' improve o ments claimed l herein 5. Figs. 2, 3v and f1-.fare ,sectional views made on planes indieatedre--v f spec'fii'fely bythe lines Illf-III, and

.vi Fg- 1,-.' i 4 30` Inthe practice ofppour invention the tablet, l is 'given a downward inclination from its" .e upper end andy an upward i'nclin'athni` from' its' rear" 'side lto its front `or mineral` dis` charge edge, -The sandis :Eed'into the box at one'4 en'd ofy the trough [3, which isA suitably supportedat the upper end ofthe-table and extends along the same, as shown] in Figs. 1, 2 and 4.' The sand' `flowsvv from` the box under the partition'4,along thetrough and passes outthrough openings 5 in the upper wall of thetrough and down'fbetweenthe" latter and the rim v(i along the head' of the?,I table. On account of the downward inclina-" tion of the table the sand will tend to ilow vinclination thereof being such that the rate of flow will be slow and will not materially retardthe settling down of the heavierelements or minerals, the material encounters .a

series of riiiies 7 arranged., transverse of the @ments in Coneentmiina-.Tablesi frear side.; r Adjacenttof the. minral discharge `edge l e tionlis,hereinafter@incre.fully` describedfandclaimed table .and A,1i-greaterthanI .n degreesto the direction of` flew t'of 'the in ate? rial. The heavy elements-settling doyvn are canghtpjbyithese rile's', :While the lighter ,porfa 60 tions ass over: the riiiies to thel ,lowert end `of the ta le.` By reason'ofthe-Ybration of` the table the minerals caught `by the :riies arev caused to move transverse of the table, but.

'p as the lighter materialwor angueisinot a'vf-l .a5 r

fectedtothe saine extent' yl the'fvibnations.y the 'tendency yto lmove transversely. toward I the mineralfdi'schargeedge due to the motion of the table is'checked lto a greathexten'tby:yV

` ing shoiivnfthat al table adapted to treatY coarse l material as sandl will 'noty loefy equallyieffient in' treating liner "material:

he inclination of the table upward its the table isprovided'fwith,araised portion or lplateau A8, intersecting `the"direction ofy inoveinent'of the heaifierfeleinents'-due toftfhe "15 vibration,ojthetable.,v 'I ghis plateau is so proportioned' and arranged that-its inner edge (indicated'bythe line a) whiehis made, f .jomparatively abrnpt, coinoidesf ,-aplgroxin v mately with the line. of -v.separation of;v the "gangueu and values. ,Asfthefrnaterials in their vinover'nent due tof ,the vibrations. en. 'Counter this edge of tlefpleteulny Overlyingv lighter "material or gan'gue .will be thrown back, while theyaluesalthough their movement may be .momentallly checked or retarded,` will move. up onto andl` across, .the t plateau. over .the discharge'edgevinto the-` fplaunder Infor-der to prevent the heavyv material Inovingl down along theplateauand l`:thereby preventing similar. ymaterial fart-her ,down thehta'ble movingup ontojthe plateau;

riillesl 10, preferably" in valinenientwith the riiiie's 7 areA arranged acrossfthe plateau. v lIn order to supply water for cleaning up the plateau, the trough 3 is extended across the vplateau and a partition' Hfisr arranged "acrossthe same in line or approximately in line with the inner edge of the plateau. The water fed into-,the box thus formed is evenly'distributed across the upper end of e the plateau by the discharge openings in the upper wall of the box. In order to provide water to effect a final cleaning up of the `plateau, a perforated pipe 13 extends along 105 the plateauadjacent to the discharge edge,

as shown inFigs. 1 and t It is characteristic of our improved table, that the two surfaces, i. e., the separating" and cleansing surfaces lie in twc planes 11,0

which are substantially parallel with" each other, and ,thatjhe II novementofthe matement oi the table both materials. are-diverted from such primary directionof iiow, but as the values` are directly yeontactwith the. table and ,have greater `speciiic ravity, the

' amount and rate of diversion o the values 'slip as were from under the gangue will be'the greater. Consequently the vtut w 1c l as'lt xn'ovesin the samedirection as the values although a slower rate, will present a:

g minimum resist-ance to the movement ofthe L values "In this respect the separat-ion ef;v fect'ed on our improved table dilfersfrom.

* that eifectedon other tables, on which the5 l unizfnjmly distributingmaterialy acrossthe upper end', a vplateau. havin 45 copies oftliis patent may be obtained for five cents each, by addressing the Commissioner of lPateutly Washington, ID. 0.

direction of flow of the gangue Iis, directly opposed to the movement of the values. In

4their movements towardthe front'or min-. f eral discharge edge, the materials encounterj the shoulder iordam forming the rear ed ef of .the plateau ror cleaning up surface. t.

.this 'polnt `or linethe proportion of gangue.

is comparatively small, andfornis-.the .upper i 'stratumZor layer.;- When the materials strike 1 the shoulder or. dam, the values beingrela tively heavy. will have ysuilicientmomentum totmove over the shoulderonto the plateau.

'But'.,the gangue being light will notV climb the dam` I or shoulder, .butf `will Y be thrown balr. A the ga-ngue: forms f theY upper stratum the check` or vbackward'k 'movement` willnot cause them to intermingle with the values `approaching the shoulder `or dam.

We claim .herein ,asy our 'invention 1, A concentrating table having its main urface in a singlezplane and, inclined 'downf tsrdlyrfromits head and vupwardly from it ,i rear side4 in combination with'means for d .its surface. above but substantially para lel'- with the .table and arranged along the discharge edge,A

riiiles arranged transverse of the main `surfl face of the` table, and riiiles arranged across the plateau. 4

Si. Aconcentrating table having its main surface :in a single plane and suitably inclined in combination with means for distributin material across the head of the table, riles arranged on the table at an angle greater than ninety degrees to the diistributing mate rial across the upper end of the table, .a plateau having its surface ,above but subo stantially arallel with the general surface lof lthe tab eand arranged intermediat'ethe mineral discharge of the table andthe normal line of `separation of the gangue and minerals, and rillies arranged across the plateau. 1

. 4. A concentrating table having its main surface in ai single plane and suitably inclined in combination with means for disi trbuting` material across the head of the table, rliilesiarrangedfat such an angle to the' ilow of-mater1a1 from the head as to Adivert the inineralstoward the. mineral dissl charge edge, a plateau 'havin its surface above but substantially para el with the generalsurface of the table and arranged with its inner edge at an angle`les's than ninety degrees to said riille, and riilles extending acro the plateau. v

In testimony whereof, we have lhereunto set our hands. t

- EMIL DEISTER. I WILLIAM F. DEISTER.

Witnesses: :o l

`ALICE A. TRILL, y y THOMAS B. JOYCE. f 

